/*
 * Copyright (C) 2015 - 2020, IBEROXARXA SERVICIOS INTEGRALES, S.L.
 * Copyright (C) 2015 - 2020, Jaume Olivé Petrus (jolive@whitecatboard.org)
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the <organization> nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *     * The WHITECAT logotype cannot be changed, you can remove it, but you
 *       cannot change it in any way. The WHITECAT logotype is:
 *
 *          /\       /\
 *         /  \_____/  \
 *        /_____________\
 *        W H I T E C A T
 *
 *     * Redistributions in binary form must retain all copyright notices printed
 *       to any local or remote output device. This include any reference to
 *       Lua RTOS, whitecatboard.org, Lua, and other copyright notices that may
 *       appear in the future.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Lua RTOS, jpg image management functions
 *
 */

#include "sdkconfig.h"

#if CONFIG_LUA_RTOS_LUA_USE_GDISPLAY

#include <gdisplay/gdisplay.h>
#include "primitives.h"
#include "image.h"

#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>

#include <sys/stat.h>

driver_error_t *gdisplay_image_type(const char *fname, image_type *type) {
	FILE *f;
	struct stat sb;
	uint8_t buffer[2];
	int rd;

	// Sanity checks
	if (!gdisplay_is_init()) {
		return driver_error(GDISPLAY_DRIVER, GDISPLAY_ERR_IS_NOT_SETUP, "init display first");
	}

	if (stat(fname, &sb) != 0) {
		return driver_error(GDISPLAY_DRIVER, GDISPLAY_ERR_IMAGE, strerror(errno));
	}

    f = fopen(fname, "r");
	if (!f) {
		return driver_error(GDISPLAY_DRIVER, GDISPLAY_ERR_IMAGE, strerror(errno));
	}

	// Read
    rd = fread(&buffer, 1, sizeof(buffer), f);
	if (rd != sizeof(buffer)) {
		fclose(f);
		return driver_error(GDISPLAY_DRIVER, GDISPLAY_ERR_IMAGE, "reading header");
	}

	if ((buffer[0] == 0x42) && (buffer[1] == 0x4d)) {
		*type = BMPImage;
	} else if ((buffer[0] == 0xff) && (buffer[1] == 0xd8)) {
		*type = JPGImage;
	} else {
		*type = UNKNOWImage;
	}

	fclose(f);

	return NULL;

}

#endif
